Grains and grain boundaries in highly crystalline monolayer molybdenum disulfide
arXiv:1301.1985 · doi:10.1038/nmat3633
Abstract
Recent progress in large-area synthesis of monolayer molybdenum disulfide, a new two-dimensional direct-bandgap semiconductor, is paving the way for applications in atomically thin electronics. Little is known, however, about the microstructure of this material. Here we have refined chemical vapor deposition synthesis to grow highly crystalline islands of monolayer molybdenum disulfide up to 120 um in size with optical and electrical properties comparable or superior to exfoliated samples. Using transmission electron microscopy, we correlate lattice orientation, edge morphology, and crystallinity with island shape to demonstrate that triangular islands are single crystals. The crystals merge to form faceted tilt and mirror boundaries that are stitched together by lines of 8- and 4- membered rings. Density functional theory reveals localized mid-gap states arising from these 8-4 defects. We find that mirror boundaries cause strong photoluminescence quenching while tilt boundaries cause strong enhancement. In contrast, the boundaries only slightly increase the measured in-plane electrical conductivity.
References in corpus (14)
- Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
- Two Dimensional Atomic Crystals
- Boron nitride substrates for high-quality graphene electronics
- Single-Layer MoS2 Phototransistors
- Synthesis of Large-Area MoS2 Atomic Layers with Chemical Vapor Deposition
- Vapor Phase Growth and Grain Boundary Structure of Molybdenum Disulfide Atomic Layers
- Control and Characterization of Individual Grains and Grain Boundaries in Graphene Grown by Chemical Vapor Deposition
- Two-dimensional transition metal dichalcogenides under electron irradiation: defect production and doping
- Topological Defects in Graphene: Dislocations and Grain Boundaries
- Electron-hole transport and photovoltaic effect in gated MoS2 Schottky junctions
- Cones, pringles, and grain boundary landscapes in graphene topology
- Ultrafast and spatially resolved studies of charge carriers in atomically-thin molybdenum disulfide
- MoS2 Nanoparticles Grown on Graphene: An Advanced Catalyst for Hydrogen Evolution Reaction
- Imaging Stacking Order in Few-Layer Graphene
Cited by in corpus (222)
- Emerging Device Applications for Semiconducting Two-Dimensional Transition Metal Dichalcogenides
- Ultrafast Charge Transfer in Atomically Thin MoS2/WS2 Heterostructures
- Excitons in atomically thin transition metal dichalcogenides
- Vapor Phase Growth and Grain Boundary Structure of Molybdenum Disulfide Atomic Layers
- Measurement of the optical dielectric function of transition metal dichalcogenide monolayers: MoS2, MoSe2, WS2 and WSe2
- Strong Photoluminescence Enhancement of MoS2 through Defect Engineering and Oxygen Bonding
- Hopping Transport through Defect-induced Localized States in Molybdenum Disulfide
- Photocurrent generation with two-dimensional van der Waals semiconductors
- Theory of Neutral and Charged Excitons in Monolayer Transition Metal Dichalcogenides
- Resonantly hybridised excitons in moiré superlattices in van der Waals heterostructures
- Black phosphorus: narrow gap, wide applications
- Evolution of Interlayer Coupling in Twisted MoS2 Bilayers
- Gate-tunable Memristive Phenonmena Mediated by Grain Boundaries in Single Layer MoS2
- Electronic structures and theoretical modelling of two-dimensional group-VIB transition metal dichalcogenides
- Elastic Properties of Chemical-Vapor-Deposited Monolayer MoS2, WS2, and Their Bilayer Heterostructures
- Ultrafast Dynamics of Defect-Assisted Electron-Hole Recombination in Monolayer MoS2
- Charge transport and mobility engineering in two-dimensional transition metal chalcogenide semiconductors
- Strain engineering in semiconducting two-dimensional crystals
- Identification of single nucleotides in MoS2 nanopores
- Polycrystalline graphene and other two-dimensional materials
- Transport properties of monolayer MoS grown by chemical vapour deposition
- Halide-Assisted Atmospheric Pressure Growth of Large WSe2 and WS2 Monolayer Crystals
- Direct imaging of the band profile in single layer on graphite: quasiparticle energy gap, metallic edge states and edge band bending
- Vapor-Solid Growth of High Optical Quality MoS2 Monolayers With Near-Unity Valley Polarization
- Analyzing the Carrier Mobility in Transition-metal Dichalcogenide MoS2 Field-effect Transistors
- Vapor-Liquid-Solid Growth of Monolayer MoS2 Nanoribbons
- Efficient Interlayer Relaxation and Transition of Excitons in Epitaxial and Non-epitaxial MoS2/WS2 Heterostructures
- Influence of Stoichiometry on the Optical and Electrical Properties of Chemical Vapor Deposition Derived MoS
- Electronic Transport in Two-Dimensional Materials
- Valley excitons in two-dimensional semiconductors
- Atomic reconstruction and moiré patterns in transition metal dichalcogenide van der Waals heterostructures
- Chemical assembly of atomically thin transistors and circuits in a large scale
- Trion induced negative photoconductivity in monolayer MoS2
- Chemically Tailoring Semiconducting Two-Dimensional Transition Metal Dichalcogenides and Black Phosphorus
- Observation of charge density wave order in 1D mirror twin boundaries of single-layer MoSe2
- Low Frequency Electronic Noise in Single-Layer MoS2 Transistors
- Large Thermoelectricity via Variable Range Hopping in Chemical Vapor Deposition Grown Single-layer MoS2
- Hundredfold Enhancement of Light Emission via Defect Control in Monolayer Transition-Metal Dichalcogenides
- Fabrication methods for integrating 2D materials
- A Universal, Rapid Method for Clean Transfer of Nanostructures onto Various Substrates
- Hybrid tip-enhanced nano-spectroscopy and -imaging of monolayer WSe2 with local strain control
- Parallel Stitching of Two-Dimensional Materials
- Machine-Learning Interatomic Potentials Enable First-Principles Multiscale Modeling of Lattice Thermal Conductivity in Graphene/Borophene Heterostructures
- Observation of interlayer phonon modes in van der Waals heterostructures
- Exciton Dynamics in Monolayer Transition Metal Dichalcogenides
- Synthesis of Large-Area WS2 monolayers with Exceptional Photoluminescence
- Enhanced Light-Matter Interaction in Two-Dimensional Transition Metal Dichalcogenides
- Giant Two-Photon Absorption in Monolayer MoS2
- Dense network of one-dimensional mid-gap metallic modes in monolayer MoSe2 and their spatial undulations
- Surface Recombination Limited Lifetimes of Photoexcited Carriers in Few-Layer Transition Metal Dichalcogenide MoS2
- Direct growth of single- and few-layer MoS2 on h-BN with preferred relative rotation angles
- Rotationally Commensurate Growth of MoS2 on Epitaxial Graphene
- MoS2 Transistors Operating at Gigahertz Frequencies
- Mechanics of freely-suspended ultrathin layered materials
- Screw-Dislocation-Driven Growth of Two-Dimensional Few-Layer and Pyramid-Like WSe2 by Sulfur-Assisted Chemical Vapor Deposition
- Efficient global structure optimization with a machine learned surrogate model
- Chemical Vapor Deposition Synthesized Atomically Thin Molybdenum Disulfide with Optoelectronic-Grade Crystalline Quality
- Intrinsic Electrical Transport and Performance Projections of Synthetic Monolayer MoS2 Devices
- Defect-induced conductivity anisotropy in MoS2 monolayers
- Capture the growth kinetics of CVD growth of two-dimensional MoS2
- Vertical CVD Growth of Highly Uniform Transition Metal Dichalcogenides
- Mapping of Low-Frequency Raman Modes in CVD-Grown Transition Metal Dichalcogenides: Layer Number, Stacking Orientation and Resonant Effects
- Molecular-beam epitaxy of monolayer and bilayer WSe2: A scanning tunneling microscopy/spectroscopy study and deduction of exciton binding energy
- How Substitutional Point Defects in Two-Dimensional WS Induce Charge Localization, Spin-Orbit Splitting, and Strain
- Line Defects in Molybdenum Disulfide Layers
- Quantum Spin Hall Effect and Topological Phase Transition in Two-Dimensional Square Transition Metal Dichalcogenides
- Deep Learning Enabled Strain Mapping of Single-Atom Defects in 2D Transition Metal Dichalcogenides with Sub-picometer Precision
- Light matter interaction in transition metal dichalcogenides and their heterostructures
- Strain Mapping of Two-Dimensional Heterostructures with Sub-Picometer Precision
- Electrical control of near-field energy transfer between quantum dots and 2D semiconductors
- A Gapless MoS Allotrope Possessing Both Massless Dirac and Heavy Fermions
- Mutual Photoluminescence Quenching and Photovoltaic Effect in Large-Area Single-Layer MoS2-Polymer Heterojunctions
- Sub-Nanometer Channels Embedded in Two-Dimensional Materials
- Wafer-Scale and Deterministic Patterned Growth of Monolayer MoS2 via Vapor-Liquid-Solid Method
- Point Defects and Grain Boundaries in Rotationally Commensurate MoS2 on Epitaxial Graphene
- Giant persistent photoconductivity in monolayer MoS2 field-effect transistors
- Highly-Oriented Atomically Thin Ambipolar MoSe Grown by Molecular Beam Epitaxy
- Angle resolved photoemission spectroscopy reveals spin charge separation in metallic MoSe2 grain boundary
- Fast Exciton Annihilation by Capture of Electrons or Holes by Defects via Auger Scattering in Monolayer Metal Dichalcogenides
- Line and Point Defects in MoSe2 Bilayer Studied by Scanning Tunneling Microscopy and Spectroscopy
- Quantum Spin Hall Effect in 2D Transition Metal Dichalcogenide Haeckelites
- Ambipolar Light-Emitting Transistors on Chemical Vapor Deposited Monolayer MoS2
- Generating Periodic Grain Boundary Structures: Algorithm and Open-Source Python Library
- High Intrinsic Mobility and Ultrafast Carrier Dynamics in Multilayer Metal Dichalcogenide MoS2
- Ice Rule and Emergent Frustration in Particle Ice and Beyond
- Intervalley coupling by quantum dot confinement potentials in monolayer transition metal dichalcogenides
- Probing the Intrinsic Optical Quality of CVD Grown MoS2
- Mechanical response of all-MoS2 single-layer hetrostructures: A ReaxFF investigation
- Atomic structure of intrinsic and electron-irradiation-induced defects in MoTe2
- Breaking of symmetry in graphene growth on metal substrates
- Global optimization of atomistic structure enhanced by machine learning
- Mesoscale Imperfections in MoS2 Atomic Layers Grown by Vapor Transport Technique
- Efficient cathodoluminescence of monolayer transitional metal dichalcogenides in a van der Waals heterostructure
- Opto-valleytronic imaging of atomically thin semiconductors
- Photodetectors based on junctions of Two-Dimensional Transition metal dichalcogenides
- Edge modes in zigzag and armchair ribbons of monolayer MoS
- Majorana Fermions on Zigzag Edge of Monolayer Transition Metal Dichalcogenides
- Tuning the Electronic Structure of Monolayer Graphene/MoS2 van der Waals Heterostructures via Interlayer Twist
- Two-Dimensional Transition Metal Dichalcogenides with a Hexagonal Lattice: Room Temperature Quantum Spin Hall Insulators
- Growth-Induced Strain in Chemical Vapor Deposited Monolayer MoS2: Experimental and Theoretical Investigation
- Valley Trion Dynamics in Monolayer MoSe
- Graphene-like Dirac states and Quantum Spin Hall Insulators in the square-octagonal MX2 (M=Mo, W; X=S, Se, Te) Isomers
- Epitaxial Growth of Large Area Single-Crystalline Few-Layer MoS2 with Room Temperature Mobility of 192 cm2V-1s-1
- Spin- and valley-polarized transport across line defects in monolayer MoS2
- Enhanced Visibility of MoS2, MoSe2, WSe2 and Black Phosphorus: Making Optical Identification of 2D Semiconductors Easier
- Grain Boundary Structures and Collective Dynamics of Inversion Domains in Binary Two-Dimensional Materials
- Revealing the Brønsted-Evans-Polanyi Relation in Halide-Activated Fast MoS2 Growth Towards Millimeter-Sized 2D Crystals
- Engineering polar discontinuities in honeycomb lattices
- Controlled Growth of Large-Area Bilayer Tungsten Diselenides with Lateral P-N Junctions
- Investigation of Growth-Induced Strain in Monolayer MoS2 Grown by Chemical Vapor Deposition
- Nonlinear dark-field imaging of 1D defects in monolayer dichalcogenides
- Rippling, buckling and melting of single- and multi-layer MoS
- Defect-induced large spin-orbit splitting in the monolayer of PtSe
- Illuminating Invisible Grain Boundaries in Coalesced Single-Orientation WS2 Monolayer Films
- STEM image analysis based on deep learning: identification of vacancy defects and polymorphs of
- Nanoscale modification of WS trion emission by its local electromagnetic environment
- Uniform vapor pressure based CVD growth of MoS2 using MoO3 thin film as a precursor for co-evaporation
- Toward Low-Temperature Solid-Source Synthesis of Monolayer MoS2
- Disentangling the effects of doping, strain and defects in monolayer WS2 by optical spectroscopy
- Scalable Fabrication of Atomically Thin Monolayer MoS2 Photodetectors
- Strong thermal transport along polycrystalline transition metal dichalcogenides revealed by multiscale modelling for MoS2
- Millimeter-scale layered MoSe2 grown on sapphire and evidence for negative magnetoresistance
- Localized defect states in MoS monolayers: electronic and optical properties
- Direct Observation of One-Dimensional Peierls-Type Charge Density Wave in Twin Boundaries of Monolayer MoTe
- Stacking-Dependent Optical Properties in Bilayer WSe2
- Defect Engineering of Two-dimensional Molybdenum Disulfide
- Band Bending and Valence Band Quantization at Line Defects in MoS
- Grain boundary-mediated nanopores in molybdenum disulfide grown by chemical vapor deposition
- Real-time observation of epitaxial graphene domain reorientation
- Interface-Confined Doubly Anisotropic Oxidation of Two-Dimensional MoS2
- Electronic Janus lattice and kagome-like bands in coloring-triangular MoTe2 monolayers
- Low wavenumber Raman spectroscopy of highly crystalline MoSe2 grown by chemical vapor deposition
- Two-dimensional Kagome Materials: Theoretical Insights, Experimental Realizations, and Electronic Structures
- Hydrogenation and defect formation control the strength and ductility of MoS2 nanosheets: Reactive molecular dynamics simulation
- Manipulation of exciton and trion quasiparticles in monolayer WS2 via charge transfer
- Gate-modulated conductance of few-layer WSe_2 field-effect transistors in the subgap regime: Schottky barrier transistor and subgap impurity states
- Lateral heterostructures of two-dimensional materials by electron-beam induced stitching
- Grain Boundaries in Chemical Vapor Deposited Atomically Thin Hexagonal Boron Nitride
- Dynamics of Symmetry-Breaking Stacking Boundaries in Bilayer MoS2
- Direct Visualization of Electric Field induced Structural Dynamics in Monolayer Transition Metal Dichalcogenides
- The Role of Mobile Point Defects in Two-Dimensional Memristive Devices
- Effects of CVD Growth Parameters on Global and Local Optical Properties of MoS Monolayers
- In situ Imaging of an Anisotropic Layer-by-Layer Phase Transition in Few-Layer MoTe2
- Reproducible Performance Improvements to Monolayer MoS2 Transistors through Exposed Material Forming Gas Annealing
- Transport properties of the top and bottom surfaces in monolayer MoS2 grown by chemical vapor deposition
- Fluid Guided CVD Growth for Large-scale Monolayer Two-dimensional Materials
- Visualization of defect-induced excitonic properties of the edges and grain boundaries in synthesized monolayer molybdenum disulfide
- Spatial Non-Uniformity in Exfoliated WS2 Single layers
- New Quantum Spin Hall Insulator in Two-dimensional MoS with Periodically Distributed Pores
- Optoelectronic properties of defective MoS and WS monolayers
- Intra-Domain Periodic Defects in Monolayer MoS
- Microstructure and Elastic Constants of Transition Metal Dichalcogenide Monolayers from Friction and Shear Force Microscopy
- Evidence of Rotational Fröhlich Coupling in Polaronic Trions
- Unidirectional domain growth of hexagonal boron nitride thin films
- Greens function approach to edge states in transition metal dichalcogenides
- Strain induced topological phase transition at zigzag edges of monolayer transition-metal dichalcogenides
- Optical absorption in disordered monolayer molybdenum disulfide
- Boundary conditions for transition-metal dichalcogenide monolayers in the continuum model
- Enhanced Conductivity Along Lateral Homojunction Interfaces of Atomically Thin Semiconductors
- The Sign of Three: Spin/Charge Density Waves at the Boundaries of Transition Metal Dichalcogenides
- Symmetries and hybridization in the indirect interaction between magnetic moments in MoS nanoflakes
- The thermal and electrical properties of the promising semiconductor MXene Hf2CO2
- High Throughput Characterization of Epitaxially Grown Single-Layer MoS2
- Phase-Modulated Degenerate Parametric Amplification Microscopy
- Chemical Vapor Deposition Growth of Monolayer WSe2 with Tunable Device Characteristics and Growth Mechanism Study
- The Atomic and Electronic structure of 0° and 60° grain boundaries in MoS2
- Noncollinear exchange interaction in transition metal dichalcogenide edges
- Nano-optical investigation of grain boundaries, strain and edges in CVD grown MoS monolayers
- Multidimensional Analysis of Excitonic Spectra of Monolayers of Tungsten Disulphide: Towards Computer Aided Identification of Structural and Environmental Perturbations of 2D Materials
- Magnetic Switching in Monolayer 2D Diluted Magnetic Semiconductors via Spin-to- Spin Conversion
- Tuning exciton recombination rates in doped transition metaldichalcogenides
- Resonant tunneling in disordered borophene nanoribbons with line defects
- Probing defect states in few-layer MoS by conductance fluctuation spectroscopy
- Development and Application of a ReaxFF Reactive Force Field for Ni-Doped MoS
- Pump-triple sum-frequency-probe spectroscopy of transition metal dichalcogenides
- Long range of indirect exchange interaction on the edges of MoS flakes
- Epitaxial growth of atomically thin Ga2Se2 films on c-plane sapphire substrates
- Growth and Properties of Dislocated Two-dimensional Layered Materials
- Thermodynamically driven tilt grain boundaries of monolayer crystals using catalytic liquid alloys
- Avalanche photodiodes based on MoS2/Si heterojunctions
- Electronic Transport and Thermopower in 2D and 3D Heterostructures--A Theory Perspective
- Epitaxially defined Luttinger liquids on MoS bicrystals
- The dynamics of copper intercalated molybdenum ditelluride
- Synthesis and optical properties of large-scale single-crystalline two-dimensional semiconductor WS2 monolayer from chemical vapor deposition
- Probing the optical near-field interaction of Mie nanoresonators with atomically thin semiconductors
- A simple KPFM-based approach for electrostatic-free topographic measurements: the case of MoS on SiO
- Quantum well confinement and competitive radiative pathways in the luminescence of black phosphorus layers
- Unveiling the multi-level structure of midgap states in Sb-doped MoX (X = S, Se, Te) monolayers
- Scaling of alloy interfacial properties under compositional strain
- Phase engineering in tantalum sulfide monolayers on Au(111)
- Understanding Substrate Effects on Two-Dimensional MoS2 Growth: a Kinetic Monte Carlo Approach
- Multi-terminal electrical transport measurements of molybdenum disulphide using van der Waals heterostructure device platform
- Robust one-dimensionality at twin-grain-boundaries in MoSe
- Analyzing Growth Kinematics and Fractal Dimensions of Molybdenum Disulfide Films
- Effect of electron-irradiation on layered quantum materials
- Statistical Mechanics of Low Angle Grain Boundaries in Two Dimensions
- Noninvasive Photodelamination of van der Waals Semiconductors for High-Performance Electronics
- Spectroscopic investigation of defects in two dimensional materials
- Atomic mechanism of phase transition between metallic and semiconducting MoS2 single-layers
- Collective excitations in two-component one-dimensional massless Dirac plasma
- Correlating 3D atomic defects and electronic properties of 2D materials with picometer precision
- Lateral heterojunctions within monolayer semiconductors
- Universal wrinkling of freestanding atomically thin films
- Intrinsic Point Defects in Ultrathin 1T-PtSe2 Layers
- Large-area Epitaxial Monolayer MoS2
- Coherent Atomically-Thin Superlattices with Engineered Strain
- Unraveling Intertwined Impacts between Lattice Vacancy and Substrate on Photonic Quasiparticles in Monolayer MoS
- Directly grown monolayer MoS2 on Au foils as efficient hydrogen evolution catalysts
- Strengthening and Weakening by Dislocations in Monolayer MoS2
- Etching-free transfer of wafer-scale MoS2 films
- Synthesis of ultrahigh-quality monolayer molybdenum disulfide through in-situ defect healing with thiol molecules
- Visualizing the in-gap states in domain boundaries of ultra-thin topological insulator films
- Molybdenum Disulphide Nanoflakes Grown by Chemical Vapour Deposition on Graphite: Nucleation, Orientation, and Charge Transfer
- Epitaxy of new layered materials: 2D chalcogenides and challenges of weak van der Waals interactions
- Large-area and high-quality 2D transition metal telluride
- Probing the Electrical Properties of Overlapped Graphene Grain Boundaries by Raman spectroscopy
- Contactless photo-induced carrier density control in nanocrystal MoS2 hybrids
- Considerations for utilizing sodium chloride in epitaxial molybdenum disulfide
- Super-resolved optical mapping of reactive sulfur-vacancy in 2D transition metal dichalcogenides
- Fast transient charge trapping in salt-aided CVD synthesized monolayer MoS2 field-effect transistor
- Topologically nontrivial flat bands and quantum Hall crossovers in square-octagon lattice materials
- Intrinsic defects, fluctuations of the local shape, and the photo-oxidation of black phosphorus